Prajna
Fixing things for the love of it
- Messages
- 679
- Location
- Castelo Branco, Portugal
Last year Sgt Ze asked me to fix his chimney cowl, which wasn't turning. Well I did what I could greasing up the bearing and tried to straighten the bearing support but only managed to break one of the welds. I apologisedto Ze and told him that was the best I could do and that really it needed someone who could weld or to be replaced.
This year I learned to weld and am now proficient enough (just) to do the job.
The bearing support frame (or whatever it's called) was pushed up, so that the cowl was rubbing on the chimney. I laid a piece of 50x50x5mm SHS across the cowl and used a G clamp to pull the bearing into the correct position. That broke another weld on the other side and I pulled out the first rod that I broke the weld on last year. I used a cup brush to clean off the soot from the joints and then a die grinder to clean to bright metal. I guessed it would only want about 40A because the band I was welding to is very thin but after a try it turned out that it took 70A on a 2mm rod to fix it. The bearing (if you can call it that!) was loose and had been filled with lead to try to firm it up. I tacked the sides of the bearing and reflowed the lead with a propane torch. The centre bush, which I fitted last year) still turns, as does the centre of the bearing. Took it down greased and refitted it. There was just enough wind to see that it works. Ze is pleased and has now asked me to weld up the back of his wood burner, which has a big gap at the back where he has kicked logs into it when they didn't fit! Probably I'll have to pull the whole burner out so I can panel beat it back into place. Happy daze.
This year I learned to weld and am now proficient enough (just) to do the job.
The bearing support frame (or whatever it's called) was pushed up, so that the cowl was rubbing on the chimney. I laid a piece of 50x50x5mm SHS across the cowl and used a G clamp to pull the bearing into the correct position. That broke another weld on the other side and I pulled out the first rod that I broke the weld on last year. I used a cup brush to clean off the soot from the joints and then a die grinder to clean to bright metal. I guessed it would only want about 40A because the band I was welding to is very thin but after a try it turned out that it took 70A on a 2mm rod to fix it. The bearing (if you can call it that!) was loose and had been filled with lead to try to firm it up. I tacked the sides of the bearing and reflowed the lead with a propane torch. The centre bush, which I fitted last year) still turns, as does the centre of the bearing. Took it down greased and refitted it. There was just enough wind to see that it works. Ze is pleased and has now asked me to weld up the back of his wood burner, which has a big gap at the back where he has kicked logs into it when they didn't fit! Probably I'll have to pull the whole burner out so I can panel beat it back into place. Happy daze.